Efficient continuous dryer for flexible polyurethane foam and cleaning apparatus
Patent
·
OSTI ID:335453
A method of cleaning polyurethane foams where the material is transported through a wash station while alternately soaking the polyurethane foam in an organic solvent and squeezing solvent from the polyurethane foam a number of times. Then the polyurethane foam is sent through a rinse or solvent transfer station for reducing the concentration of solvent in the foam. The rinsed polyurethane foam is sent to a drying station wherein the foam is repeatedly squeezed while being exposed to hot air to remove wet air from the foam. 4 figs.
- Research Organization:
- University of Chicago
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Univ. of Chicago, IL (United States)
- Patent Number(s):
- US 5,882,432/A/
- Application Number:
- PAN: 8-692,801
- OSTI ID:
- 335453
- Country of Publication:
- United States
- Language:
- English
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